Stephen Warren f031f501ef rpi: BCM2837 and Raspberry Pi 3 32-bit support ... The Raspberry Pi 3 contains a BCM2837 SoC. The BCM2837 is a BCM2836 with the CPU complex swapped out for a quad-core ARMv8. This can operate in 32- or 64-bit mode. 32-bit mode is the current default selected by the VideoCore firmware on the Raspberry Pi 3. This patch adds a 32-bit port of U-Boot for the Raspberry Pi 3. >From U-Boot's perspective, the only delta between the RPi 2 and RPi 3 is a change in usage of the SoC UARTs. On all previous Pis, the PL011 was the only UART in use. The Raspberry Pi 3 adds a Bluetooth module which uses a UART to connect to the SoC. By default, the PL011 is used for this purpose since it has larger FIFOs than the other "mini" UART. However, this can be configured via the VideoCore firmware's config.txt file. This patch hard-codes use of the mini UART in the RPi 3 port. If your system uses the PL011 UART for the console even on the RPi 3, please use the RPi 2 U-Boot port instead. A future change might determine which UART to use at run-time, thus allowing the RPi 2 and RPi 3 (32-bit) ports to be squashed together. The mini UART has some limitations. One externally visible issue in the BCM2837 integration is that the UART divides the SoC's "core clock" to generate the baud rate. The core clock is typically variable, and under control of the VideoCore firmware for thermal management reasons. If the VC FW does modify the core clock rate, UART communication will be corrupted since the baud rate will vary from the expected value. This was not an issue for the PL011 UART, since it is fed by a fixed 3MHz clock. To work around this, the VideoCore firmware can be told not to modify the SoC core clock. However, the only way this can happen and be thermally safe is to limit the core clock to a low/minimum frequency. This leaves performance on the table for use-cases that don't care about a UART console. Consequently, use of the mini UART console must be explicitly requested by entering the following line into config.txt: enable_uart=1 A recent version of the VC firmware is required to ensure that the mini UART is fully and correctly initialized by the VC FW; at least firmware.git 046effa13ebc "firmware: arm_loader: emmc clock depends on core clock See: https://github.com/raspberrypi/firmware/issues/572". Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>		2016-04-01 17:17:42 -04:00
..
andestech	…
asm-generic	gpio: Use const where possible	2016-03-17 10:27:22 +08:00
bedbug	…
cavium	armv8: cavium: Add an implementation of ATF calling functions	2016-01-19 22:26:12 +00:00
configs	rpi: BCM2837 and Raspberry Pi 3 32-bit support	2016-04-01 17:17:42 -04:00
cramfs	…
dm	serial: add BCM283x mini UART driver	2016-03-27 09:12:52 -04:00
dt-bindings	include/dt-bindings: Sync some files with the kernel	2016-03-23 22:04:13 +01:00
faraday	…
fsl-mc	driver: net: fsl-mc: flib changes for MC FW 9.0.0	2016-01-27 08:13:10 -08:00
grlib	…
jffs2	…
linux	compiler*.h: sync include/linux/compiler*.h with Linux 4.5-rc6	2016-02-29 11:43:24 -05:00
lzma	…
mtd	…
net	…
pcmcia	…
power	pmic: tps65218: add useful functions and defines	2016-02-24 18:44:07 -05:00
samsung	…
synopsys	…
test	…
u-boot	Kconfig: Move CONFIG_FIT and related options to Kconfig	2016-03-14 19:18:07 -04:00
usb	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
zfs	…
.gitignore	cmd: Fix license command	2016-03-22 12:16:13 -04:00
ACEX1K.h	…
MCD_dma.h	…
MCD_progCheck.h	…
MCD_tasksInit.h	…
SA-1100.h	…
_exports.h	…
adc.h	…
addr_map.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
aes.h	…
ahci.h	dm: ahci: Convert to use new DM PCI API	2016-01-12 10:19:09 -07:00
ali512x.h	…
altera.h	fpga: altera: Add StratixV support	2016-03-24 09:47:43 +01:00
ambapp.h	…
ambapp_ids.h	…
android_image.h	…
ansi.h	…
api_public.h	…
armcoremodule.h	…
asm-offsets.h	…
ata.h	…
atmel_hlcdc.h	…
atmel_lcd.h	…
atmel_lcdc.h	…
atmel_mci.h	…
autoboot.h	…
axp152.h	…
axp209.h	…
axp221.h	sunxi: axp: Generalize register macros for VBUS drive GPIO	2016-03-31 17:03:52 +02:00
axp818.h	power: axp818: Add support for FLDOs	2016-03-31 17:03:58 +02:00
axp_pmic.h	power: axp818: Add support for FLDOs	2016-03-31 17:03:58 +02:00
backlight.h	dm: backlight: Add a backlight uclass	2016-01-21 20:42:36 -07:00
bcd.h	…
bios_emul.h	dm: pci: Convert bios_emu to use the driver model PCI API	2016-01-24 12:07:19 +08:00
bitfield.h	…
blk.h	dm: blk: Add a block-device uclass	2016-03-14 15:34:50 -06:00
bmp_layout.h	…
bootcount.h	…
bootm.h	…
bootretry.h	…
bootstage.h	…
bouncebuf.h	…
bus_vcxk.h	…
bzlib.h	bzip2: Support compression for sandbox	2016-01-20 19:06:23 -07:00
cbfs.h	…
circbuf.h	…
cli.h	…
cli_hush.h	…
clk.h	dm: clk: Add support for decoding clocks from the device tree	2016-01-21 19:47:29 -07:00
cmd_spl.h	…
command.h	Drop command-processing code when CONFIG_CMDLINE is disabled	2016-04-01 17:17:40 -04:00
common.h	Merge git://git.denx.de/u-boot-dm	2016-03-14 19:21:44 -04:00
common_timing_params.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
commproc.h	…
compiler.h	Revert "include/linux: move typdef for uintptr_t"	2015-12-16 07:11:15 -05:00
config_cmd_all.h	Remove unused CONFIG_CMD_HWFLOW option and associated dead code.	2016-02-08 10:22:44 -05:00
config_defaults.h	…
config_distro_bootcmd.h	arm64: Replace fdt_name env variables with fdtfile	2016-03-15 21:30:13 -04:00
config_distro_defaults.h	Move CONFIG_OF_LIBFDT to Kconfig	2016-03-14 14:50:25 -04:00
config_fallbacks.h	Drop various features when the command line is not available	2016-03-22 12:16:11 -04:00
config_fsl_chain_trust.h	SECURE_BOOT: Use default bootargs	2016-03-29 08:46:23 -07:00
config_phylib_all_drivers.h	…
config_uncmd_spl.h	spl: dm: Add SPL_DM_SEQ_ALIAS config option	2016-01-13 13:20:02 +01:00
console.h	console: Add a console buffer	2015-11-19 20:27:50 -07:00
cortina.h	…
cpsw.h	…
cpu.h	cpu: Add support for microcode version and CPU ID	2016-03-17 10:27:22 +08:00
crc.h	include/crc.h: Remove unreferenced cyg_xxx() prototypes	2016-03-14 19:18:42 -04:00
cros_ec.h	…
cros_ec_message.h	…
dataflash.h	…
ddr_spd.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
debug_uart.h	debug_uart: output CR along with LF	2016-03-14 15:34:50 -06:00
dfu.h	dfu: usb: f_dfu: Set deferred call for dfu_flush() function	2016-02-24 19:12:32 +01:00
dialog_pmic.h	…
display.h	dm: video: Add a operation to display uclass	2016-03-14 22:01:26 +01:00
display_options.h	…
div64.h	…
dm-demo.h	…
dm.h	…
dm9000.h	…
dma.h	dm: implement a DMA uclass	2016-02-23 16:14:45 +05:30
dp83848.h	…
ds1722.h	…
ds4510.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
dtt.h	…
dwc3-omap-uboot.h	…
dwc3-uboot.h	…
dwmmc.h	mmc: dw_mmc: support fifo mode in dwc mmc driver	2015-12-01 08:07:22 -07:00
e500.h	…
ec_commands.h	…
edid.h	dm: video: Repurpose the 'displayport' uclass to 'display'	2016-01-21 20:42:36 -07:00
efi.h	include/efi_api.h: Add more detailed API definitions	2016-03-15 15:19:23 -04:00
efi_api.h	efi_loader: Add GOP support	2016-03-27 09:12:12 -04:00
efi_loader.h	efi_loader: Add GOP support	2016-03-27 09:12:12 -04:00
elf.h	…
env_attr.h	…
env_callback.h	…
env_default.h	…
env_flags.h	tools: env validate: pass values as 0-based array	2016-02-08 10:10:29 -05:00
environment.h	…
errno.h	…
ethsw.h	drivers: net: vsc9953: Add LAG support	2016-01-28 12:22:19 -06:00
exports.h	…
ext4fs.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
ext_common.h	…
exynos_lcd.h	…
fastboot.h	…
fat.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
fb_mmc.h	…
fb_nand.h	…
fdt.h	…
fdt_simplefb.h	…
fdt_support.h	…
fdtdec.h	x86: dts: Drop memory SPD compatible string	2016-03-17 10:27:27 +08:00
fis.h	…
flash.h	stm32: stm32f4: move flash driver to mtd driver location	2016-03-26 18:49:28 -04:00
fm_eth.h	…
fpga.h	fpga: Add bitstream type BIT_NONE	2016-01-27 15:55:54 +01:00
fs.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_csu.h	…
fsl_dcu_fb.h	…
fsl_ddr.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_ddr_dimm_params.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
fsl_ddr_sdram.h	driver/ddr/fsl: Add address parity support for DDR4 UDIMM/discrete	2016-03-21 12:42:13 -07:00
fsl_ddrc_version.h	…
fsl_debug_server.h	…
fsl_devdis.h	…
fsl_diu_fb.h	…
fsl_dspi.h	…
fsl_dtsec.h	…
fsl_errata.h	fsl/ddr: updated ddr errata-A008378 for arm and power SoCs	2015-12-13 18:27:28 -08:00
fsl_esdhc.h	ARM: imx: fsl_esdhc: fix usage of low 4 bits of sysctl register	2016-01-03 15:21:21 +01:00
fsl_fman.h	fm: fdt: Move fman ucode fixup to driver code	2016-02-24 08:51:13 -08:00
fsl_ifc.h	…
fsl_immap.h	…
fsl_mdio.h	net: tsec: fsl_mdio: Fix several cosmetic issues	2016-01-28 12:22:49 -06:00
fsl_memac.h	…
fsl_pmic.h	…
fsl_qe.h	qe: move drivers/qe/qe.h to include/fsl_qe.h	2016-02-24 08:51:13 -08:00
fsl_sec.h	imx: Refactoring CAAM Job Ring structure and Secure Memory for imx7	2016-02-21 11:20:54 +01:00
fsl_sec_mon.h	…
fsl_secboot_err.h	armv8: fsl-lsch3: Add new header for secure boot	2016-03-29 08:46:20 -07:00
fsl_sfp.h	armv8: ls2080: Add SFP Configs for LS2080	2016-03-29 08:46:19 -07:00
fsl_tgec.h	…
fsl_usb.h	drivers:usb:fsl: Add T4080 as affected soc for Erratum A007792 sw workaround	2015-12-07 00:14:59 +01:00
fsl_validate.h	SECURE BOOT: Change fsl_secboot_validate func to pass image addr	2016-03-29 08:46:23 -07:00
fsl_wdog.h	imx_watchdog: always set minimal timeout in reset_cpu	2016-01-07 17:54:53 +01:00
fuse.h	…
g_dnl.h	…
gdsys_fpga.h	…
gt64120.h	…
hash.h	hash.c: Conditionally compile hash_command, static hash_show	2016-01-13 21:05:08 -05:00
hw_sha.h	…
hwconfig.h	…
i2c.h	i2c: Fix the comment to match the function described	2015-11-27 05:54:21 +01:00
i2c_eeprom.h	…
i2s.h	…
i8042.h	input: i8042: Make sure the keyboard is enabled	2016-03-17 10:27:24 +08:00
ide.h	dm: Add a new header for block devices	2016-03-14 15:34:50 -06:00
image-sparse.h	…
image.h	spl: Add an option to load a FIT containing U-Boot	2016-03-14 19:18:30 -04:00
imx_thermal.h	…
initcall.h	…
input.h	input: Change LED state bits to conform i8042 compatible keyboard	2015-11-19 20:13:42 -07:00
inttypes.h	…
iomux.h	…
ioports.h	…
iotrace.h	…
ipu_pixfmt.h	…
key_matrix.h	…
keyboard.h	input: Convert 'keyboard' driver to use input library	2015-11-19 20:13:41 -07:00
kgdb.h	…
lattice.h	…
lcd.h	lcd: fix the color testpattern in 16bit mode	2016-01-24 00:38:40 +01:00
lcd_console.h	…
lcdvideo.h	…
ld9040.h	…
led-display.h	…
led.h	…
libata.h	…
libfdt.h	libfdt: Add a function to write a property placeholder	2016-03-14 14:19:11 -04:00
libfdt_env.h	…
libtizen.h	…
linker_lists.h	…
linux_logo.h	…
lmb.h	…
logbuff.h	…
lxt971a.h	…
lynxkdi.h	…
malloc.h	malloc: use hidden visibility	2016-03-08 15:01:47 -05:00
mapmem.h	…
mb862xx.h	…
mc9sdz60.h	…
mc13783.h	…
mc13892.h	…
mc34704.h	…
memalign.h	…
membuff.h	Add a circular memory buffer implementation	2015-11-19 20:27:50 -07:00
menu.h	…
micrel.h	…
mii_phy.h	…
miiphy.h	…
mipi_display.h	…
misc.h	include: Correct "requset" typoes in misc.h	2016-01-08 10:15:42 -05:00
mk48t59.h	…
mmc.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
mpc5xx.h	…
mpc5xxx.h	…
mpc5xxx_sdma.h	…
mpc8xx.h	…
mpc8xx_irq.h	…
mpc83xx.h	powerpc/83xx: fix build failure	2016-01-20 10:19:40 -05:00
mpc85xx.h	…
mpc86xx.h	…
mpc106.h	…
mpc823_lcd.h	…
mpc8260.h	…
mpc8260_irq.h	…
msc01.h	…
mtd.h	…
mtd_node.h	…
mv88e6352.h	…
mvebu_mmc.h	…
mvmfp.h	…
nand.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
net.h	net: export eth_setenv_enetaddr_by_index() to net.h	2016-03-27 09:12:26 -04:00
netdev.h	net: emaclite: Move driver to DM	2016-01-27 15:55:52 +01:00
ns16550.h	dm: ns16550: Add support for reg-offset property	2016-03-17 21:27:39 -06:00
ns87308.h	…
onenand_uboot.h	…
os.h	…
palmas.h	…
panel.h	dm: panel: Add a panel uclass	2016-01-21 20:42:36 -07:00
part.h	disk/part.c: Expose list of available block drivers	2016-03-15 15:19:22 -04:00
part_efi.h	…
pc_keyb.h	…
pca953x.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
pca9564.h	…
pca9698.h	…
pch.h	dm: pch: Add get_io_base op	2016-02-05 12:47:21 +08:00
pci.h	pci: make pci_get_hose_head() available to external users	2016-03-21 12:42:12 -07:00
pci_gt64120.h	…
pci_ids.h	…
pci_msc01.h	…
pci_rom.h	dm: pci: video: Convert video and pci_rom to use DM PCI API	2016-01-12 10:19:09 -07:00
pcmcia.h	…
pe.h	efi_loader: Add PE image loader	2016-03-15 15:19:23 -04:00
phy.h	net: phy: introduce a quirk PHY_FLAG_BROKEN_RESET	2016-01-28 13:20:30 -06:00
phys2bus.h	…
physmem.h	…
post.h	…
ppc_asm.tmpl	…
ppc_defs.h	…
ps2mult.h	…
pwm.h	dm: pwm: Add a PWM uclass	2016-01-21 20:42:36 -07:00
pwrseq.h	dm: Add a power sequencing uclass	2016-01-21 20:42:34 -07:00
pxa_lcd.h	…
radeon.h	…
ram.h	…
rc4.h	…
regmap.h	…
reiserfs.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
remoteproc.h	…
reset.h	…
rtc.h	…
rtc_def.h	…
s6e63d6.h	…
s_record.h	…
samsung-usb-phy-uboot.h	…
sandbox-adc.h	…
sandboxblockdev.h	dm: sandbox: Add driver-model block-device support for sandbox	2016-03-14 15:34:50 -06:00
sandboxfs.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
sata.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
scf0403_lcd.h	…
scsi.h	…
sdhci.h	…
search.h	…
sed156x.h	…
sed13806.h	…
serial.h	…
sh_pfc.h	…
sh_tmu.h	…
sja1000.h	…
slre.h	…
sm501.h	…
smsc_lpc47m.h	…
smsc_sio1007.h	superio: Add SMSC SIO1007 driver	2016-02-21 13:42:52 +08:00
sound.h	…
sparse_defs.h	…
sparse_format.h	…
spartan2.h	…
spartan3.h	…
spd.h	…
spd_sdram.h	…
spi.h	spi: Add support for dual and quad mode	2016-01-13 18:47:27 +05:30
spi_flash.h	Add more SPDX-License-Identifier tags	2016-01-19 08:31:21 -05:00
spl.h	Merge git://git.denx.de/u-boot-dm	2016-03-14 19:21:44 -04:00
splash.h	…
status_led.h	…
stdio_dev.h	…
stdlib.h	…
stratixII.h	…
sx151x.h	…
sy8106a.h	sunxi: power: add support for sy8106a driver	2016-02-23 20:50:07 +01:00
sym53c8xx.h	…
syscon.h	dm: syscon: Allow finding devices by driver data	2016-01-24 12:07:19 +08:00
systemace.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
tca642x.h	…
tegra-kbc.h	…
thermal.h	…
thor.h	…
ti-usb-phy-uboot.h	…
timer.h	timer: Provide an early timer	2016-02-26 08:53:10 -07:00
timestamp.h	…
tmu.h	…
tpm.h	…
tps6586x.h	…
trace.h	…
tsec.h	net: tsec: Use priv->tbiaddr to initialize TBI PHY address	2016-01-28 12:23:19 -06:00
tsi108.h	…
tsi148.h	…
twl4030.h	…
twl6030.h	input: TWL6030 input support for power button, USB and charger	2016-03-15 15:12:57 -04:00
tws.h	…
ubi_uboot.h	…
ubifs_uboot.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
universe.h	…
usb.h	Fix spelling of "transferred".	2016-03-22 12:16:16 -04:00
usb_cdc_acm.h	…
usb_defs.h	…
usb_ether.h	usb: eth: add Realtek RTL8152B/RTL8153 DRIVER	2016-01-23 16:22:34 +01:00
usb_mass_storage.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
usbdescriptors.h	…
usbdevice.h	…
usbroothubdes.h	…
uuid.h	…
vbe.h	…
version.h	…
video.h	video: Correct 'tor' typo in comment	2016-01-30 10:58:47 +01:00
video_bridge.h	…
video_console.h	video: Provide a backspace method	2016-01-30 10:55:37 +01:00
video_easylogo.h	…
video_fb.h	…
video_font.h	…
video_font_4x6.h	…
video_font_data.h	…
video_logo.h	…
virtex2.h	…
vsc7385.h	…
vsc9953.h	drivers: net: vsc9953: Add LAG support	2016-01-28 12:22:19 -06:00
vsprintf.h	vsprintf.c: Always enable CONFIG_SYS_VSNPRINTF	2016-01-19 08:31:16 -05:00
vxworks.h	…
w83c553f.h	…
wait_bit.h	lib: Add wait_for_bit	2016-01-25 10:39:47 -05:00
watchdog.h	…
winbond_w83627.h	misc: Add simple driver to enable the legacy UART on Winbond Super IO chips	2016-01-28 13:53:30 +08:00
xilinx.h	…
xyzModem.h	…
zfs_common.h	dm: Drop the block_dev_desc_t typedef	2016-03-14 15:34:50 -06:00
zynqpl.h	…